<template>
  <div><!-- 面包屑导航区域 -->
      <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card style="margin-top:20px">
    <el-alert
    title="添加商品信息"
    type="info"
    center
    show-icon>
  </el-alert>
   <el-steps :space="200" :active="Number(activeIndex)" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
     <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
    <el-tabs tab-position='left' v-model="activeIndex" :before-leave="beforeLeave" @tab-click="tabClick">
    <el-tab-pane label="基本信息" name='0'>
          <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
            <el-cascader
                v-model="addForm.goods_cat"
                :options="catesList"
                :props="catesListProps"
                @change="handleChange"></el-cascader>
            </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品参数" name='1'>
      <el-form-item v-for="item in  manyTableData" :key=item.attr_id :label="item.attr_name">
      <el-checkbox-group v-model="item.attr_vals" size="small">
      <el-checkbox  v-for="(item2,index) in item.attr_vals" :key=index :label="item2" border></el-checkbox>
    </el-checkbox-group>
      </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品属性" name='2'>
      <el-form-item v-for="item in onlyTableData" :key="item.attr_id" :label="item.attr_name">
        <el-input v-model="item.attr_vals"></el-input>
      </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品图片" name='3'>
    <el-upload
      :action="uploadURL"
      :on-preview="handlePreview"
      :on-remove="handleRemove"
      :on-success="handleSuccess"
      :headers="headerObj"
      list-type="picture">
  <el-button size="small" type="primary">点击上传</el-button>
</el-upload>
    </el-tab-pane>
     <el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">
    <div class='image'><img :src="previewPath" class="previewImag"></div>
  </el-dialog>
    <el-tab-pane label="商品内容" name='4'>
      <quill-editor v-model="addForm.goods_introduce"></quill-editor>
      <div><el-button type="primary" class="btnAdd" @click="add">添加商品</el-button></div>
    </el-tab-pane>
  </el-tabs>
  </el-form>
    </el-card>
    </div>
</template>

<script>
import _ from 'lodash'
import request from '../../api/index'
export default {
    name:'Add',
    data(){
        return {
      activeIndex:'0',
      addForm:{
          goods_name:'',
          goods_price:0,
          goods_weight:0,
          goods_number:0,
          goods_cat:[],
          pics:[],
          goods_introduce:''
      },
      addFormRules:{
            goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      catesList:[],
      catesListProps:{
          label:'cat_name',
          value:'cat_id',
          children:'children',
          expandTrigger: 'hover' 
      },
      onlyTableData:[],
      manyTableData:[],
      uploadURL:'http://127.0.0.1:8888/api/private/v1/upload',
      headerObj:{Authorization:window.sessionStorage.getItem('token')},
      previewPath:'',
      previewVisible:false
      }
    },
    computed:{
        catId(){
            return this.addForm.goods_cat.length==3?this.addForm.goods_cat[2]:null
        }
    },
    created(){
        this.getCatesList()
    },
    methods:{
       async getCatesList(){
        const { data: res } = await request({url:'/categories',method:'get'})
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类数据失败！')
      }
      this.catesList = res.data
      console.log(this.catesList)
        },
    handleChange(val){
        console.log(val);
        console.log(this.addForm.goods_cat)
    },
    beforeLeave(activeName,oldActiveName){
            if(oldActiveName=='0'){
                if(this.addForm.goods_name==''){
                     this.$message.error("请填写商品名称！")
                     return false
                }
                 if(this.addForm.goods_price==''){
                     this.$message.error("请填写商品价格！")
                     return false
                }
                 if(this.addForm.goods_weight==''){
                     this.$message.error("请填写商品重量！")
                     return false
                }
                 if(this.addForm.goods_number==''){
                    this.$message.error("请填写商品数量！")
                    return false
                }
                if(this.addForm.goods_cat.length==0){
                     this.$message.error("请选择商品分类！")
                     return false
                }
            }
    },
   async tabClick(){
          // console.log(this.activeIndex)
      // 证明访问的是动态参数面板
      if (this.activeIndex === '1') {
        const { data: res } = await request({url:`/categories/${this.catId}/attributes`,
        method:'get',params: { sel: 'many' }})

        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败！')
        }

        console.log(res.data)
        res.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.manyTableData = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await request({url:`/categories/${this.catId}/attributes`,
        method:'get',params: { sel: 'only' }})
        if (res.meta.status !== 200) {
          return this.$message.error('获取静态属性失败！')
        }
        console.log(res.data)
        this.onlyTableData = res.data
      }
    },
     handleRemove(file, fileList) {
       const filePath=file.response.tmp_path
       const index=this.addForm.pics.findIndex(item=>item.pic===filePath)
       this.addForm.pics.splice(index,1)
      },
      handlePreview(file) {
        this.previewPath=file.response.data.url
        this.previewVisible=true
      },
      handleSuccess(response){
        this.addForm.pics.push({pic:response.data.tmp_path})
      },
      add(){
        this.$refs.addFormRef.validate(async valid=>{
          if(!valid){
            return this.$message.error("请填写必要的表单项！")
          }
          const form=_.cloneDeep(this.addForm)
          form.goods_cat=form.goods_cat.join(',')
          form.attrs=[]
          this.manyTableData.forEach(item=>{form.attrs.push({attr_id:item.attr_id,attr_vals:item.attr_vals.join(' ')})})
          this.onlyTableData.forEach(item=>{form.attrs.push({attr_id:item.attr_id,attr_vals:item.attr_vals})})
           console.log(form)
           const {data:res}=await request({url:'/goods',method:'post',data:form})
           if(res.meta.status!==201){
            return this.$message.error("创建商品失败！")
           }
           this.$message.success("创建商品成功！")
           this.$router.push('/goods')    
        })
      }
    }
    }
</script>

<style lang='less' scoped>
.el-steps{
    margin-top:20px
}
.el-form{
    margin-top: 20px;
}
.previewImg {
  width: 100px;
  height: 100px;
}
.image{
  width:100px;
  height:100px;
  img{
    width:100%;
    height:100%
  }
}
.btnAdd{
  margin-top: 20px;
  margin-left:492px;

}

</style>